I think that's a good plan. Depending on timing we can stop at the BMW "Niederlassung" (BMW Factory Dealership) for some window shopping/browsing and/or a stop at ///M GmbH/Studio and factory paintshop which is just across the road from ///M . If nothing else for a quick photo op .
It's all on the way and we can easily detour/correct based on weather/traffic/timing.